# lightspark/lightspark

An open source flash player implementation

Repository: https://github.com/lightspark/lightspark
Canonical: https://ross.abutalabs.com/products/lightspark
Homepage: http://lightspark.github.io/
Language: C++
License: LGPL-3.0
License Family: copyleft
Last push: 2026-08-26T20:10:16+00:00

## Health v2 (maintenance only)
Score: 67/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 8, longevity 100
- inputs: {"age_days": 5859, "days_push": 7, "days_rel": 563, "gap_med": null, "n_releases_24m": 1}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1897, forks 229 (observed 2026-08-28T04:05:51.103557+00:00)

## What it is
Lightspark is an open source Flash player implementation written in C++ that plays SWF files and supports all versions of ActionScript. It can run as a standalone application or as a browser plugin (including a PPAPI plugin for Chromium).

## Use cases
- play old flash games and animations
- open swf files on linux
- replace adobe flash player after end of life
- run flash content in chromium browser
- view legacy flash websites
- play actionscript 3 swf files

## When to choose
- you need to play legacy SWF/Flash content on Linux or Windows
- you want a free, open source alternative to Adobe Flash Player
- you need a browser plugin or standalone player for Flash files

## When to avoid
- you need 100% Flash compatibility for complex or obscure content
- you need a Flash player on macOS
- you want a polished, production-grade player rather than an alpha-quality implementation

## Facets
- artifact type: application
- maturity: active
- function: graphics, interpreter, gui
- domain: graphics, gaming-tools, cross-platform
- platform: windows, cpp, browser-extension
- tags: flash-player, swf, actionscript, browser-plugin, adobe-flash, shockwave-flash, linux

## Member repositories
- lightspark/lightspark (main) score 67

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:51.103557+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:12:48.459708+00:00, confidence not recorded.
  - readme: https://github.com/lightspark/lightspark (fetched 2026-08-28T04:05:51.103557+00:00, sha 5bca3726da92)
  - homepage: http://lightspark.github.io/ (fetched 2026-08-29T10:51:35.773168+00:00, sha 940589159402)
- Data as of 2026-08-30T08:39:29.467469+00:00.